Not another drain/flush thread

Actually it is, but this one should be easy. I've done the research and formed my own opinion that I do not want to do a transmission flush on my 05 with 115k, since it's never been done.

What I haven't heard are any negatives about doing a drain and fill a few times over 15k miles or so (besides cost). Is it agreed that this method, while maybe not seen as efficient, is relatively "safe" and accepted as an alternate to a power flush? I'd like to get some fresh fluid in there, but don't feel comfortable with the flush.

 

ive heard rumors that the old fluid will just eat at the new fluid thus making it pointless but that's just what my mechanic buddy told me. but if you do many drain and fills its not much different then doing a full flush using this method

https://www.tacomaworld.com/threads/diy-full-flush-for-automatic-transmission.68462/

at least this way you are just flushing it using the systems normal operating pressures thus less likely to loosen up bad crap causing bad things to happen but I don't know, I'm sitting on the fence just as your are haha ive got 230k km's on mine and I doubt its been done, I bought it used so I'm not sure haha

 

You both should just drop the pan and clean the filter. If your ATF fluid looks decent and doesn’t smell burnt it’s up to you how to proceed. Some prefer to do the flush posted above some may do multiple drain and fills.

 

Speaking as a more mature person ( Old Man ) in the forums. I have had several Toyota Automatic transmissions flushed all were over 100K miles and none have suffered any ill effects. None of these vehicles had burned the transmission fluid. Not to say that nobody has, I don't know, but I would imagine that if the fluid is already burned and you flush it would uncover something that is already damaged.

 

I appreciate the insight! I never thought about that. Could be most failures after a flush we’re inevitable. At any rate, if a drain and fill can get some fresh blood pumping without big issues, id be more ready to do that.

I’ll have to chat with Toyota. I’m going in Thursday for the leaf spring recall.

 

180k miles on original fluid

I have 4 quarts to do a small flush and re check the level

my ex's 2005 sienna has 207k miles and never changed tranny fluid

 

There is nothing wrong with a fluid flush at any interval throughout a cars lifetime. In fact its preferable at high mileage to make sure you aren’t mixing new and spent fluids in the trans to get yourself a milkshake looking fluid.

A trans outside of heavy hauling and towing doesn’t need to be touched until 100k anyways, so I’m not sure why people get nervous about doing anything to a trans over 100k.

Power flushes are safe.

If you have shit building up in your trans that is going to get dislodged in a flush... it was going to dislodge at some point anyways and the trans was already going to fail.

Its a fallicy that flushes can cause trans failures.